Used as a key intermediate in the synthesis of fluorescent dyes and optical brighteners due to its multiple reactive aldehyde and hydroxyl groups. Its symmetric structure enables the formation of coordination complexes with metal ions, making it useful in sensors for metal ion detection. Also employed in the development of organic semiconductors and porous organic frameworks for catalysis and gas storage. Additionally, it serves as a building block in the preparation of Schiff base polymers with potential applications in water treatment and ion exchange.